/Engine/Plugins/Editor/WaveformEditor/Source/WaveformEditorWidgets/Public/SWaveformTransformationRenderLayer.h
The system will use this event to notify a widget that the cursor has entered it. This event is uses a custom bubble strategy.
virtual void OnMouseEnter ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & MyGeometry, const [FPointerEvent](API\Runtime\SlateCore\Input\FPointerEvent) & MouseEvent )